Aaron J. Douglas and David A.Harpman's article "Estimating Recreation Employment Effects with IMPLAN for the Glann Canyon Dam Region," they assert that recreational activity is beneficial to allow for the increase in job opportunities. They believe that this will specifically improve "Lee's Ferry site on the Colorado River." They presented this information in order to portray the idea that hosting recreational activities will cause more opening businesses and therefore an increase in number of jobs. This information was presented in a formal and informational way but it did so with an appeal to the general public.

Douglas, J. Aaron. Harpman, David A. "Estimating Recreation Employment Effects with IMPLAN for the Glann Canyon Dam Region" Midcontinent Ecological Science Center. vol. 44. issue 3. (1994). Web.
http://www.sciencedirect.com/science/article/pii/S0301479785700436